Circular route starting and ending in the BTT centre (Parque Biológico).Regular paths, accessible to mountain bikers with some experience.It goes past the Charca de Vidoeira observatory and continues through the Parque Natural de Montesinho as far as Fraga dos Três Reinos, by way of the historic village of Moimenta, through Montouto, Travanca, Paçó and Prada.